Auxiliary locomotive



Nov. 1, 1927. .H. c. MILLER AUXILIARY LOGOMOTIVE Filed ,May 25, 1925 I v INVENTOR. #87287}? ATTORNEYS.

Patented Nair. 1, 1927.

' EENRVYCQZ'MILLER, OF'WATFQREORD? NEW' OBK;

AUXnmRY-Looo oT E. i

f ltppl ication-filedjlvfay2S; 1325. seiiaiiio. 32 ,772

This invention ,is directed ,to improvements "in auxiliarylocomotivesioi boosters; V

In auxiliary. locomot ves of ;th1s' type,

arious means have heen heretofore pro.-' posed, through which anechamealjcOniieic-y.

tionibetween Ithedriying element, OEY-the booster and the driven element; of -the truck or like-part tmay; be perfected at; w ll, but

such interconnectiiw means, Which is iisually bodily i ioyehle; toand from an operative positiomteiids' to reduce the eifectivepower oithe booster, complicate the meehai ism andJnere see the Wear of the. necessary parts.

' It isthepriricipal: object, of the presentir yeiitioi lto dispense With an auxiliaryfmov- Fable pert-Which 'meybefopereted at will as the interposed coilneeti g element between the;hooster 2ii1d driven part; mcljt-o provide a; means Whiclif is always inoperative relation to 'thedriveii or triickpait, e d which at will vni'ay he clutched for operative. actum tion by the booster, whereby the'mii imu nj mimber'of/drivingparts are employed, the

, driyi greletion ofth esepaits is etallttimee v oftheibooster. V

'iiniior i {and exact, [and the operator. may

the max mum power;

v -19 insure,- a utilization l of Av further lobjeotjofgrthep. invehtioniis the tirolglbut operative hothflin clutching and imcli tohiiig through the. not'ueti o l oi booster. V :7 1 The,irlventior gisillustratedin? he a'econr p l yingzdraw ge n. w i n 1 of the improved booster.

v 2 ,is 5e: longitudi-n V illi s-f i fiie ifi w mo mt g f J g d th rg oper t ng 11621 8,: n d ez nly e ne" shown-1' Fig; 5 is 2,; side= .elevation of one, of the o s mt-its p r e 'm si e do e ng; ShownjimflQrmel or; inoperative position in] full-lines; a d in operetiye position in' dotted lines .f

::-In :the--; drawings; iridicatesf ag .triiekg okyvhiejhfl i and; 3 indicate fit-he, front ei cl'freenezles; .Ag-s the boost-er ,proper eside;

whet iyill hereina tterbe termed the driving 3 member, vThe vIgnition hasz a is axiel'; length I greeterthan thatjofjthegeai 4, so th'atjthe.

..;16 having rounded cem terminals 117.1; The Eig l-isatplan v1e ,pa1-tl broken; away,

l .5; unit Which,issupportedflior wingir gmey v 1 central section of the same. i v I Fig; 3 is 422 broken sectional .yieyv, on line ion 11,1;

70111 {the details hereihafter referredlto, forms no: part, ofuthe l present iiiyentiol ClIaWiIigillUStrHQ-WS a f-portioh j i' only oil-such booster, .fit5 being understood {)0 that any. conventional" r;'desired'fconstriio tion of booster may beflemployedy. f Oli e ofthe axles, as.-2, is :for't-he purpose of the 1 present? invention provided with i a;

relatively fixe earwheeihereinafter 6 7 termed the, driven memher; and suitably 7 supported v n. the truck, aslbyhea ririg's'fi 6,"

arid 'Lisa motor frameifig heyingmOtOlJSZ-Q, proyided' vwith operating; creiik Connections with a e -er, shaft; 10." Onthe she'ftr101isi loosely "Iiiountetha pinion; 1 1 which fisr designed to be :itelltimesiiihmeshrwithlthe, gear, heel 4, with such pinion eoiistitiitiiig pi iioii. is disposed or' projeo tsheyor d gear at one si'de; Securedupon the. she'tt lOiis. zildisof Pivotally supported in thesdi'sc ivheel logy ,aiidg in line iyithi theprojectirig garm nt?" 'theipln oi 115 are a, serles of-jdogs; orIpa'Wlls,

which arefso mounted,eiidfiormed that pinion 11, s c'h'stiids "are. provided witli 'rrfis.

payvls, studs, andper'msy forinfa tintegralv nient in the; disc he el"12;.,-s'o. thetthroiigli moyement otithe tim l6,lthe'pawlsi hayebe @rh pemiin m bn L- 'he we provided in an operatingswheel.18.:1nountedloosely. on e the 7 power shift and hayiiig a P r ph ra u f c ll {of ai PreQ able'width-w s1operatin wh lwll P erably/ f skeleton outlii e; fis .i'or ed a 'ap'pro-fpr' points; with ai series of alni depressioiisflllf i v in which the oam eilds of are 1 at ell-times seated: The operatingiwheel lffi.

" limit-2w fimtmg medium of coil springs 21, terminally connected to the disc wheel and to the operating wheel, and tensioned to normally hold the operating wheel in such relation to the disc wheel that the arms 16 of the pawls 14 will be held by the cam depressions to maintain of such band connected in any appropriate manner to an operating means, whereby the band maybe temporarily tightened about the operating wheel. For the purpose of illustration, such means is shown as a lever 23, though any appropriate means are contemplated for this purpose. Under the action of the manually operable means provided, the band is tightened about'the periphery of the operating wheel, and the motion of the latter is slightly retarded, the springs 21 yielding to permit this relative movement of the operating wheel andydisc of the pinion 11.

wheel. Under this relative movement, the cam depressions 20 move the arms 16 of the pawl units, and thereby move the pawls 14:, into cooperation with the extended portion The pinion is thereby fixed with relation to, the operating shaft and, the booster motors being in operation,

the power of the booster is communicated tothe driven elem'ent"or gear 4.

'As the driving action is through the pawls 1.4:, the latter will remain in engagement with thepinion 11 as long as the latter is exerting power upon the gear 1, but when the pinion ll fails as a power transferring element, as when the gear 4t is driven bythe thepower shaft 10.

tractive powerof the truck on the rails ata speed exceeding that of the pinion 11, the

,working pressure of such pinion is relieved,

the pawls are m'ore or less freed and the springs 21 act to return theoperating wheel to normal relation with the disc wheel 12, thereby disconnecting the pinion' ll from 7 From the above'it will be apparent that the invention in its broadest aspect is direct ed to means employed to connect and disconpne ct the motors of the booster from the driven element thereof.

The invention is thus to be distinguished from the heretofore proposedconstructions of. utilizing intermediate normally idle gears adapted to be bodilymoved to and from an operative relation between the driving elements of the booster and the driven element thereof, in that the present invention utilizes a clutch for a normally idle gear which is at all times in operative mesh with the driven element, which clutch is operative at will to interlock the normally idle gear with the power element of the booster without in any way disturbing the relation of that gear with the booster elements'or with the driven element. This permits an unusually strong construction, proper driving :mesh of the gears, and direct power transmission, and

avoids liability'of breakage and undue strain and wear on the Working parts.

Obviously, without material change other than positioning the parts, the clutch mechanism herein described could be applied :to the driven gear 4, in which event, the driving pinion 11 would be at all times fixed on the power shaft 10. i

I claim: 1. A locomotive booster including a'power train having a power shaft, an element nor} mally idle thereon, and a driving member at 1 all times in operative connect on wlth the idle element, and a clutch governing'the in troduction of sa1d idle element as a driving member inthe power train, said clutch being automatically released to render sald element idle under predetermined powertram f conditions. v

2. A locomotive booster including a power train having a power shaft, a gear normally idle thereon, a driven gear at all'times in mesh with the idle gear, and a manually controlled clutch for positively locking said gear as an element of the power train, said clutch automatically releasing said gear as an element of the power train under predetermined power" train conditions.

' A locomotive booster, including a power train comprising a booster driven power shaft, a driven element, and an intermediate gear normally loose on the power'shaft, and a mainially controlled clutch for locking said gear to the power shaft to complete the power train between such shaft and drivenv '2 element, said clutch automatically releasing said gear as an element of the power train under 'predetermlncd' power train conditions.

, 4i Alocomotive'booster, including a power train havlng a booster driven'power shaft,

a gear normally idle thereon, and; ajdriven gear at all times in mesh with said idle gear,

a plurality of pawls for connecting the idle gear to the power shaft, a. member flexibly driven by the power shaft for controlling the position of the ,pawls,and means for controlling the member to induce movement of the pawls to lock said'idle gear to the power shaft. V i

5. A locomotive booster, including'a power train having a booster driven power shaft,

a gear normally idle thereon, anda driven" llfi gear at all times in mesh with said idle gear,

a plurality of pawls for connectingv the idle gear to the power shaft, a member flexibly driven by the power shaft for controlling i the position of the pawls, and means for controlling the member to induce movement of i the pawls to lock said idle gear ,to the power truck frame and axle, a gear wheel on the I shaft, the driving pressure of the power train maintaining the operative connection of the pawls and idle gear during the continuation of such driving pressure. 6. A locomotive booster, comprising a axle, a motor mounted on the truck frame truck frame and axle, a gear wheel on the.

= including a loose pinion, and means for manually connecting and automatically discone necting the loose pinion with the motor.

7. A locomotive booster, comprising a axle, a motor mounted on the truck frame including a loose pinion, means for conmeeting the loose pinion with the motor, and

tional resistance serving under booster power to cause the idle gear to-become' a positive driving element, and means for automatically disconnecting the clutch to permit said gear to again becomeidlewhen power is cut off from the booster.

9. A locomotive booster, comprising a truck frame andaxle, a motor mounted on the truck frame, a gear fixedon the axle, i

a clutch for connecting the motor to the gear, and means for automatically disconnecting the clutch when the speed of the axle exceeds the speedof the motor.

In testimony whereof I affix my signature. .7 p HEN C. MILLER. 

